On October 22, 2009, Microsoft unveiled an enhanced operating system as compared to its predecessor, Windows Vista. Windows 7 is slightly different compared to Windows 7. For instance, Whereas Vista unleashed a multitude of new programs, Windows 7 is intended to be more of a gradual upgrade to the Windows operating system. Despite the improvements as previously noted, there are some drawbacks. First, some applications, such as Windows Calendar, Windows Mail, and Windows Movie Maker (just to name a few), are not included in the software. Also, there is no longer a sidebar for desktop gadgets.